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A307740 as a simple table

na(n)
11
22
36
412
524
628
740
884
9120
10252
11360
12496
13672
142480
153276
164680
177440
188128
1930240
2032760
2156896
22293760
23435708
24523776
25997920
262178540
272618880
288910720
2923569920
3033550336
3145532800
3264995840
33102136320
34142990848
35275890944
36436154368
37459818240

[1,2,6,12,24,28,40,84,120,252,360,496,672,2480,
 3276,4680,7440,8128,30240,32760,56896,293760,
 435708,523776,997920,2178540,2618880,8910720,
 23569920,33550336,45532800,64995840,102136320,
 142990848,275890944,436154368,459818240]